【摘要】 以穿龙薯蓣不同生长时期的根、茎、叶、果(花)为试材,测定了氮、磷、钾含量并分析其变化规律。结果表明:根茎中氮、磷、钾含量在营养生长期、根茎旺盛生长期和枯萎期有很大波动,且营养期高于根茎旺盛生长期和枯萎期;植株地上部分茎的氮、磷、钾含量均低于叶和果(花),果(花)除花期外氮含量低于叶片,钾含量高于茎和叶片。更多还原

【Abstract】 The content of N, P and K was measured in order to know the varying laws in root, stem, leaf and seed(flower) of Dioscorea nipponica in different growth periods. The results showed that the content of N, P and K in rhizome fluctuated greatly in vegetative growth period, fast growth period and fade period, and it was higher in the vegetative period than that in other two periods; The content of N, P and K in stem was lower than that in leaf and fruit(flower), except in blooming period, the content of N in fruit(flower)was lower than that in leaf and the content of K in fruit(flower) was higher than that in stem and leaf.更多还原